Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Since no annotations are provided, the description carries the full burden. It discloses that the operation is read-only ('Returns') and that results are 'recent', which implies a temporal ordering. However, it does not explain pagination behavior, the definition of 'recent', or the structure of the returned notifications, leaving gaps in the behavioral disclosure.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.